Cables include power cables, control cables, compensation cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, and so on. They are all composed of single or multiple wires and insulation layers, used to connect circuits, appliances, etc.

Several types of commonly used cable models and their usage scenarios:

1. VV: PVC insulated and PVC sheathed power cables
Can be laid indoors, in tunnels, cable trenches, pipelines, flammable and severely corrosive areas, but cannot withstand mechanical external forces. If it needs to withstand mechanical external forces, it is necessary to wrap steel strip armor.

2. YJV: Crosslinked polyethylene insulation, polyvinyl chloride sheathed power cable
It can be laid indoors, in tunnels, and in pipelines, and can withstand certain laying traction, but the cable cannot withstand external forces. Single core cables are not allowed to be laid in magnetic material pipelines. If it needs to withstand mechanical external forces, it is necessary to wrap steel strip armor.

3. ZR-VV: Flame retardant PVC insulated and PVC sheathed power cables
Can be laid indoors, in tunnels, cable trenches, pipelines, flammable and severely corrosive areas, but cannot withstand mechanical external forces. If it needs to withstand mechanical external forces, it is necessary to wrap steel strip armor.
Features: In the case of open flame combustion, remove the ignition source and automatically extinguish within ≤ 12 seconds.

4. ZR-YJV: Flame retardant cross-linked polyethylene insulation, polyvinyl chloride flame retardant sheathed power cable
It can be laid indoors, in tunnels, and in pipelines, and can withstand certain laying traction, but the cable cannot withstand external forces. Single core cables are not allowed to be laid in magnetic material pipelines. If it needs to withstand mechanical external forces, it is necessary to wrap steel strip armor.
Features: In the case of open flame combustion, remove the ignition source and automatically extinguish within ≤ 12 seconds.

5. NH-VV: Fire resistant PVC insulated and PVC sheathed power cables
Can be laid indoors, in tunnels, cable trenches, pipelines, flammable and severely corrosive areas, but cannot withstand mechanical external forces. If it needs to withstand mechanical external forces, it is necessary to wrap steel strip armor. Suitable for special requirements, such as large capacity power plants, nuclear power plants, underground railways, high-rise buildings, etc.
Features: In a burning environment, it can operate normally for 90 minutes.

6. NH-YJV: Fire resistant cross-linked polyethylene insulation, polyvinyl chloride sheathed power cable
It can be laid indoors, in tunnels, and in pipelines, and can withstand certain laying traction, but the cable cannot withstand external forces. Single core cables are not allowed to be laid in magnetic material pipelines. If it needs to withstand mechanical external forces, it is necessary to wrap steel strip armor.
Suitable for special requirements, such as large capacity power plants, nuclear power plants, underground railways, high-rise buildings, etc.
Characteristic: Maintain normal operation for 90 minutes in a burning environment.